Q: 5
Refer to the exhibit: 
R1 is connected to two service providers and is under a DDoS attack Which statement about this design is true if uRPF in strict mode is configured on both interfaces'?
Options
Discussion
Probably D, because strict uRPF drops anything not following the exact expected return path. A is a common distractor here.
D imo, strict mode uRPF checks if the incoming packet's source is reachable via the same interface-if not, it gets dropped. Helps with DDoS and spoofed packets. Makes sense for what the question is asking.
C/D? Is the requirement specifically about blocking spoofed traffic only, or is the focus on route symmetry? That might flip which is correct here.
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